United Chargers Scheduling / Timer Malfunction

Scheduled charging does not start at the programmed time, but manual charging works.

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Possible Causes

Incorrect time or timezone settings, Conflicting schedules, Firmware bug in scheduler, RTC drift

How to Fix / Troubleshooting

Safety first: No internal access is needed for schedule adjustments.

  • Verify time: Check and correct the charger’s clock and timezone in the app or display.
  • Review schedules: Ensure there are no overlapping or disabled schedules that conflict with each other.
  • Test simple schedule: Create a single, short test schedule to confirm operation.
  • Firmware update: Update to the latest firmware to resolve known scheduling issues.

If scheduling remains unreliable, the RTC or firmware may require service or board replacement.

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Repair Difficulty

Easy 2/5

Required Part

Main Control Board
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